Task id10222
Seller: nerdmavr
Price: 0.17 USD
Available. The final price depends on the selected options and is checked before payment.
Product description
A subway escalator, moving uniformly, lifts a passenger standing motionless on it within one minute. On a stationary escalator, a passenger, moving uniformly, ascends in 3 minutes. How many seconds will it take a passenger to ascend an upward escalator?
Additional information
Detailed solution. Format jpg